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优化热处理方法以改善Al-Fe-Ni-Sc-Zr合金的时效响应

Optimizing the Heat Treatment Method to Improve the Aging Response of Al-Fe-Ni-Sc-Zr Alloys.

作者信息

Wang Mingliang, Bian Zeyu, Zhu Ailin, Cai Yulong, Zhang Dongdong, Wu Yanlai, Cui Shuai, Chen Dong, Wang Haowei

机构信息

State Key Laboratory of Metal Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, China.

Institute of Alumics Materials, Shanghai Jiao Tong University (Anhui), Huaibei 235000, China.

出版信息

Materials (Basel). 2024 Apr 12;17(8):1772. doi: 10.3390/ma17081772.

DOI:10.3390/ma17081772
PMID:38673129
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11050896/
Abstract

This work has studied the co-addition of Sc and Zr elements into the Al-1.75wt%Fe-1.25wt%Ni eutectic alloy. The changes in the microstructure, electrical conductivity, and Vickers hardness of the Al-1.75wt%Fe-1.25wt%Ni-0.2wt%Sc-0.2wt%Zr alloy during heat treatment were studied. The results showed that two-step aging can effectively improve the aging response of the alloy over the single-step aging method. This was ascribed to the minimization of the diffusion difference between Sc and Zr elements. Furthermore, the homogenization treatment can also improve the aging response of the alloy by alleviating the uneven distribution of Sc and Zr. Nevertheless, the micro-alloyed elements exceeded the solid solubility limit in the Al-1.75wt%Fe-1.25wt%Ni-0.2wt%Sc-0.2wt%Zr alloy, and their strengthening effect has ever achieved the best prospect. Finally, both Sc and Zr contents were reduced simultaneously, and the aging response of the Al-1.75wt%Fe-1.25wt%Ni-0.15wt%Sc-0.1wt%Zr alloy was improved by optimized heat treatment. The underlying mechanisms for this alloy design and the corresponding microstructure-mechanical property relationship were analytically discussed.

摘要

本研究工作对在Al-1.75wt%Fe-1.25wt%Ni共晶合金中同时添加Sc和Zr元素进行了研究。研究了Al-1.75wt%Fe-1.25wt%Ni-0.2wt%Sc-0.2wt%Zr合金在热处理过程中微观结构、电导率和维氏硬度的变化。结果表明，两步时效比单步时效能更有效地提高合金的时效响应。这归因于Sc和Zr元素之间扩散差异的最小化。此外，均匀化处理也可以通过减轻Sc和Zr的不均匀分布来提高合金的时效响应。然而，在Al-1.75wt%Fe-1.25wt%Ni-0.2wt%Sc-0.2wt%Zr合金中，微合金元素超过了固溶度极限，其强化效果已达到最佳状态。最后，同时降低Sc和Zr的含量，并通过优化热处理提高了Al-1.75wt%Fe-1.25wt%Ni-0.15wt%Sc-0.1wt%Zr合金的时效响应。分析讨论了这种合金设计的潜在机制以及相应的微观结构-力学性能关系。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/386d/11050896/9e33668d39db/materials-17-01772-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/386d/11050896/4852b97bdb66/materials-17-01772-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/386d/11050896/2c7917a63ae8/materials-17-01772-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/386d/11050896/8b733a70b710/materials-17-01772-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/386d/11050896/b2cb38cd8ca2/materials-17-01772-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/386d/11050896/d23f6fef0bda/materials-17-01772-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/386d/11050896/e2dc75c8b97a/materials-17-01772-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/386d/11050896/735c894bdb8a/materials-17-01772-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/386d/11050896/0a75d172858f/materials-17-01772-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/386d/11050896/2497c7c3192b/materials-17-01772-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/386d/11050896/9e33668d39db/materials-17-01772-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/386d/11050896/4852b97bdb66/materials-17-01772-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/386d/11050896/2c7917a63ae8/materials-17-01772-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/386d/11050896/8b733a70b710/materials-17-01772-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/386d/11050896/b2cb38cd8ca2/materials-17-01772-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/386d/11050896/d23f6fef0bda/materials-17-01772-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/386d/11050896/e2dc75c8b97a/materials-17-01772-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/386d/11050896/735c894bdb8a/materials-17-01772-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/386d/11050896/0a75d172858f/materials-17-01772-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/386d/11050896/2497c7c3192b/materials-17-01772-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/386d/11050896/9e33668d39db/materials-17-01772-g010.jpg

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本文引用的文献

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Materials (Basel). 2024 Jan 28;17(3):644. doi: 10.3390/ma17030644.
2
Effective Platform Heating for Laser Powder Bed Fusion of an Al-Mn-Sc-Based Alloy.基于Al-Mn-Sc合金激光粉末床熔融的有效平台加热
Materials (Basel). 2023 Dec 10;16(24):7586. doi: 10.3390/ma16247586.
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Effect of Aging Treatment on the Strength and Microstructure of 7075-Based Alloys Containing 2% Li and/or 0.12% Sc.时效处理对含2%锂和/或0.12%钪的7075基合金强度和微观结构的影响
Materials (Basel). 2023 Nov 27;16(23):7375. doi: 10.3390/ma16237375.
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